№ files_lp_3_process_7_040699
A guidance document intended for employers and health professionals, outlining biological monitoring of 4-methylpentan-2-one exposure in the workplace, including sample collection, transport, and interpretation of results.
Year: 2021
Region / City: United Kingdom
Topic: Workplace Exposure to Hazardous Substances
Document Type: Guidance
Organization / Institution: Health and Safety Executive (HSE)
Author: Health and Safety Executive
Target Audience: Employers, Health and Safety Officers
Period of Validity: Ongoing
Date of Approval: August 2021
Date of Amendments: Not specified
Biological Monitoring Guidance Value (BMGV): 20 μmol 4-methylpentan-2-one/L urine
CAS Number: 108-10-1
Alternative Names: Methyl isobutyl ketone (MIBK), Hexone
Note: Workplace Exposure Limits
8-hour TWA: 50 ppm, 208 mg/m3
15-minute STEL: 100 ppm, 416 mg/m3
Skin Notation: Yes
Sample Collection: Urine samples, 30mL, end of shift
Sample Transport: First-class post, within 48 hours
Analytical Method: Headspace-gas chromatography-mass spectrometry
Precision: <11% RSD within day, <14% RSD day-to-day
Sample Stability: 4 days at ambient temperature, >3 months at -20°C
Confounding Factors: None known
Unexposed Level: <1 µmol/L
Interpretation: Biological monitoring results indicate exposure control levels
Link to HSE Workplace Exposure Limits: http://www.hse.gov.uk/pubns/books/eh40.htm
Price: 8 / 10 USD
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